/Engine/Source/Developer/MeshMergeUtilities/Public/IMeshMergeUtilities.h
Extract mesh data inFMeshDescriptionform from the provided static mesh component
void RetrieveMeshDescription ( const [UStaticMeshComponent](API\Runtime\Engine\Components\UStaticMeshComponent) * InStaticMeshComponent, int32 LODIndex, [FMeshDescription](API\Runtime\MeshDescription\FMeshDescription) & InOutMeshDescription, bool bPropagateVertexColours ) const